Evolving Insight: How it is we can think about why things happen

'Insight' is not a very popular word in psychology or biology. Popular terms-like "intelligence", "planning", "complexity" or "cognitive"- have a habit of sprawling out to include everyone's favourite interpretation, and end up with such vague meanings that each new writer has to redefine them for use. Insight remains in everyday usage: as a down-to-earth, lay term for a deep, shrewd or discerning kind of understanding. Insight is a good thing to have, so it's important to find out how it e...